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Illustrate in detail about the Cell
The present day study of cells combines many scientific disciplines, like biochemistry, biophysics, genetics, microscopy and physiology. A great deal has been understood about cells, especially in the last 35 years, regarding how they are constructed, how they function, and how they work together in complex organisms. Still, much remains to be learned. The term 'cell' was first used by Robert Hooke in 1664 to denote the little box-like structures, which he observed in cork tissue under a primitive microscope. A contemporary of Hooke, Antonie van Leeuwenhoek, discovered sperm cells, red blood cells and a variety of microorganisms, again using a microscope consisting of a single lens. However, these initial observations led to nearly two centuries of microscopic study of cells, and, with the gradual introduction of more and more powerful microscopes, the cell nucleus was also discovered. Thus, the cellular nature of all plants and animals came to be recognised. By 1830's, it was proposed that all organisms are constructed of-cells. This statement is now known as the cell doctrine or cell theory.
Q. What are instances of nematodes? Ascaris, filaria and hookworm, all parasites of humans, are instance of nematodes also known as roundworms. Q. Are nematodes exclusively
Complete feed blocks For manufacturing the pellets, processes such as grinding, mixing, steaming and pressing and some times extruding, are applied using special and expensive
Define Immediate Preoperative Period during Surgery? Nothing should be given by mouth for at least 8 hours before a general surgery so that the stomach has no leftover food at
Define about the Composition of Body Weight? You might have read in previous units that our body weight is composed of muscle bone and fat. Segregating these components of body
The vagus gives of one superior cervical cardiac branch and an inferior cervical cardiac branch in the neck. These branches descend into the thorax and take part in performing the
endoplasmic reticulum
What is a recessive gene? With the birth of a child, it gets its genes from both parents. Some genes 'override' other genes. Using hair color as instance: If single parent i
Explain PR Murmur characterstic and graham steel murmur? PR Murmur Characteristic: Blowing, decrescendo murmur heard loudest in 2nd and 3rd left intercostal space with increa
reproduction mode
VENOU S SYSTEM It is collecting system formed by the uniting branches as smaller and then larger veins and venacava leading to the heart. Blood from anterior part of the
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